Narsil VS Anduril ???

Yes. At least, when using the ramping UI, it’s not possible to set things any other way. If I recall correctly, the ramping UI always does double-click-to-turbo. Some lights have a ramp ceiling below 100, like the BLF GT stops ramping at 80… but double click always goes to full power.

The only one which doesn’t always do double-click-to-turbo is Anduril. When starting from “off”, it goes to the ramp ceiling first, and then another double click goes to turbo. The ceiling can be set to 100% though.